Portable circular saw



FIG. 1 is a top, front and left side perspective view of a portable circular saw embodying our new design;

FIG. 2 is a top, rear and right side perspective view;

FIG. 3 is a left-side elevational view;

FIG. 4 is a right-side elevational view;

FIG. 5 is a front elevational view;

FIG. 6 is a rear elevational view; and,

FIG. 7 is a top plan view thereof. 

The ornamental design for a portable circular saw, as shown and described. 